How to Trust a Certificate on Mac: A Comprehensive Guide

Trust Certificate on Mac in 12 Easy Steps

Are you having trouble trusting a digital certificate on your Mac? Worry no more as we have outlined the steps and tips you need to follow for Mac devices to trust digital certificates. Before we go into the steps, let’s understand what a certificate is and how it works.

A certificate is simply an electronic document that contains information that allows other parties to verify your identity or authenticate the messages and files you send. Digital certificates play a crucial role in securing communications, web browsing, and e-commerce transactions. However, you need to trust a certificate before it can be effective.

Here is a step-by-step guide to trusting a digital certificate on your Mac.


Step 1: Launch Keychain Access

Go to Finder > Applications > Utilities > Keychain Access.
or Use Spotlight and search for Keychain Access.

Step 2: Select System Roots

Select System Roots in the Keychain Access sidebar.

Step 3: Select your Certificate

Select the digital certificate you want to trust.

Step 4: View Certificate Details

Double-click the digital certificate and select the “Trust” section in the pop-up window.

Step 5: Change Trust Settings

Change the “When using this certificate” option to “Always Trust”.

Step 6: Authenticate

You will need to authenticate by entering your administrative password.

Step 7: Close the Certificate window

Click on “Save Changes” to save your changes, then close the certificate window.

Step 8: Confirm the Changes

You will be prompted to confirm the changes you made. Click “Continue” to proceed.

Step 9: Enter your administrative password

You will need to enter your administrative password to confirm the changes.

Step 10: Verify the Changes

The certificate will now show a blue plus sign indicating that it is now trusted by your system.

Step 11: Refresh your Browser

You may need to restart your browser to apply changes.

Step 12: Use the Site

You can now use the trusted website without any security warnings.


After selecting the digital certificate and viewing its details, you need to change the default setting to “Always trust” to avoid any warnings in the future. Click on the lock icon on the lower left corner of the window and enter your administrative password when prompted. This will change the trust settings for the certificate. Confirm the changes and enter your password again, and you’re done.

Once these steps have been successfully carried out on a digital certificate, it is automatically trusted for all actions, including sending and receiving encrypted messages, browsing secure websites, and other secure communications.

Tips and Tricks

Tip 1: Keep an up-to-date Antivirus Software

It is crucial to have an antivirus application on your Mac device to secure it from any malware attack and secure your certificates.

Tip 2: Keep your Operating System Updated

Make sure that your Mac operating system is up to date, which includes all security updates that ensure the safety of your certificates.

Tip 3: Keep your Browser Updated

Browsers regularly update their security protocols and algorithms. Therefore, it’s essential to keep your browser updated to avoid vulnerability issues.

Tip 4: Double Check the Certificate Information

Before trusting any digital certificate, ensure that the certificate information matches the website URL and that the issuing authority is trusted.

Tip 5: Don’t Trust Unknown Certificates

Don’t trust certificates that have missing or incomplete information or from an untrusted source. Rather, report it to the relevant authorities.

Tip 6: Always Verify Digital Signatures

Before opening any important document, always verify the digital signature of the certificate to ensure its authenticity.

Tip 7: Understand Public and Private Keys

Understand the importance of public and private keys in digital certificates, and how they work together to secure your information.

Tip 8: Create a backup of your Certificates

Save a backup copy of all your vital certificates to avoid losing them in case of device loss, theft, or device crashes.

Tip 9: Regularly Review the Validity of your Certificates

It’s essential to review the validity period of your certificates to avoid trusting them if expired. Make sure to renew or obtain new certificates before the expiry date.

Tip 10: Seek Professional Help

If you’re facing trouble trusting a digital certificate, don’t hesitate to seek professional help from relevant experts.

In conclusion, trusting digital certificates on Mac is a straightforward process. Follow the steps listed, and always keep your device updated to maintain your security and safety. By following the tips and tricks listed above, you can be sure that your certificates are secure and protected.

Advantages and Disadvantages of Trusting a Certificate on Mac


1. Secure browsing: When you trust a certificate on your Mac, you can browse the internet without worrying about the safety of the websites you visit. Your browser will immediately notify you if any website has an invalid certificate.

2. Trusted applications: Certificates are used to verify the authenticity of applications on your Mac. By trusting a certificate, you will be able to run those applications without any issues.

3. Safe online transactions: Trusted certificates on your Mac help you perform safe online transactions. You can carry out transactions without worrying about cybercriminals intercepting your data.

4. Access to restricted websites: Some websites are only accessible to users with trusted certificates. By trusting a certificate, you will be able to access such sites without any hassle.

5. Protection from phishing attacks: Trusted certificates protect you from phishing attacks by verifying the authenticity of websites. It ensures that you do not fall prey to fake websites.


1. False sense of security: Although trusting a certificate is highly recommended, it is not always foolproof. Cybercriminals may bypass trusted certificates, giving you a false sense of security.

2. Malicious certificates: Some certificates may be fraudulent and purport to be from a trusted authority. If you accidentally trust such a certificate, it could lead to cybercriminals accessing sensitive information on your Mac.

3. Inconvenience: If you do not trust a certificate, you will have to go through certain procedures to access certain websites and applications, which can become inconvenient.

4. Renewal of certificates: Certificates have an expiry date, and you will have to renew them periodically to ensure continued protection. It can be easy to forget about this, leaving your Mac vulnerable.

5. Limited protection: Trusting a certificate only offers protection for specific websites and applications. It does not offer blanket protection for all internet activities, leaving your Mac vulnerable to other forms of cyber threats.


1. What is a certificate?

A certificate is a file, digitally signed by a trusted entity, that verifies the identity of a website, server, or person. It is used to establish a secure connection between devices and services.

2. Why do I need to trust a certificate?

You need to trust a certificate to ensure that the website or server you are connecting to is authentic and secure. Without trust, your personal and sensitive information can be compromised.

3. How do I know if I need to trust a certificate?

You will need to trust a certificate if you encounter a security warning or error message while browsing the internet or accessing a secure website.

4. How do I view the details of a certificate on my Mac?

You can view the details of a certificate by clicking on the lock icon in the address bar of your browser and selecting “View Certificate.”

5. How do I add a trusted root certificate to my Mac?

You can add a trusted root certificate by double-clicking on the certificate file and following the installation prompts.

6. How do I import a certificate into my Mac?

You can import a certificate by double-clicking on the certificate file or by going to “Keychain Access” and selecting “File” > “Import Items.”

7. How do I trust a self-signed certificate on my Mac?

You can trust a self-signed certificate by adding it to your Keychain and setting it to “Always Trust.”

8. How do I revoke a certificate on my Mac?

You can revoke a certificate by going to “Keychain Access” and selecting the certificate you want to revoke. From there, go to “File” > “Revoke Certificate.”

9. How do I update an expired certificate on my Mac?

You can update an expired certificate by replacing it with a new certificate and deleting the old one from your Keychain.

10. How do I troubleshoot certificate errors on my Mac?

You can troubleshoot certificate errors by checking the date and time on your Mac, clearing your browser cache, restarting your browser or device, or contacting the website or server for assistance.

11. How do I check if a certificate is valid or trusted?

You can check if a certificate is valid or trusted by viewing its details and checking the issuer and expiration dates. You can also check if it is issued by a trusted root certificate authority.

12. How do I remove a certificate from my Mac?

You can remove a certificate from your Mac by selecting it in Keychain Access and selecting “Delete” or by dragging it to the trash.

13. Can I trust all certificates on my Mac?

No, not all certificates can be trusted on your Mac. It is important to verify the identity of the certificate issuer and ensure that it is issued by a trusted root certificate authority.

When it comes to browsing the internet securely on your Mac, trusting certificates is essential. Certificates provide a secure way to verify the identity of websites you visit and protect against potential cyber-attacks. However, sometimes Mac users may encounter difficulties in trusting certificates. If you’re one of them, don’t worry. In this article, we’ll guide you on how to trust a certificate on Mac.

How to trust a certificate on Mac?

To begin with, go to the website that you’re having trouble accessing and click on the padlock icon located at the left-hand corner of the search bar. This will display more information about the website’s security and certificate.

Next, click on the ‘View Certificate’ button. This will open the certificate window, where you can view the details of the certificate and its issuer.

Once you have gone through the details and verified that the certificate is valid, click the ‘Trust’ dropdown menu. This is where you can choose the level of trust you want to assign to the certificate.

You can choose to ‘Always Trust’ the certificate, which means it will always be trusted by your system. If you’re only concerned about the current site and not future sites, select ‘Trust’ only for the current session. If you want to give access to the certificate to all users on the system, you can select ‘Use System Defaults’.

Conclusion and Closing

Trusting certificates is a necessary step in keeping your Mac safe while browsing online. By following the steps mentioned above, you can easily trust a certificate on your Mac. Remember, always verify the certificate’s details and issuer before assigning trust to it. By doing this, you’ll be able to protect your Mac from potential cyber threats. We hope this article was helpful to you. Good luck browsing securely!

Until next time,

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